Tobacco pipe



June 10, 1930. MARKsTElN 1,762,636

TOBACCO PIPE Filed Dec. 31, 1924 I Patented June 10, 1930 UNITED STATES BERNARD M. MAR-KSTEIN, OF CINCINNATI, OHIO TOBACCO PIPE Application filed December 31, 1924. Serial No. 759,202.

My invention relates to tobacco pipes and smoking devices in general and more particularly to that class in which provision has been made for the entrainment of bits of '5 tobacco and injurious juices and volatile matter caused by the burning of the tobacco, so as to prevent drawing the same into the mouth of the smoker.

I have as my object the construction of a pipe or device which will prevent all entrainment by trapping and filtering the tobacco smoke in the bowl of the pipe before it gets into the stem. Further it is my object in a tobacco pipe'to provide a foraininated plate for supporting the tobacco in the bowl of the pipe with an air space and porous disc for filtering out all noxious juices and to so dispose the plate and the disc that their removal for cleaning shall at all times be possible by a simple adjustment of the bowl of the pipe. In other smoking devices in which the tobacco is in compressed form as a cigar or cigarette I find the foraminated plate unnecessary and that I needonly provide the absorbent disc in the passageway of the smoke.

In the drawing: Figure 1 represents a vertical cross section through a tobacco pipe showing a preferred method of supporting the foraminated plate and porous disc.

Figure 2 is a perspective view of the foraminated'plate shown in Figure 1 considerably enlarged.

Figure 3 is a preferred construction of a fibrous disc.

Referring to the drawings, the tobacco pipe generally indicated at l with bit or mouth piece 2 and body portion 3 has a removable upper member 4 forming part of the bowl. In the particular form of pipe illustrated I have shown the removable upper part of the bowl with a lower cutportion 5 of less circumference than the upper portion and threads 6 cut on the outer side thereof for attachment to interlocking threads 7 disposed on the inner side of a recess in the body portion. Other methods of fastening the upper and lower parts of the bowl together will serve as Well.

' The tobaceoin the pipe is supported by a flanged foraminated plate 8 which has a face extending across the entire inner area of the bowl. This plate has a turned over side 9 with an annular flat flange 10 which holds the plate in place because it fits within the is recessed portion 11 of the lower part of the bowl where the lower extension 12 of the cut-away part of the upper bowl bears on the upper face of the annular flange.

Beneath the foraminated plate a flat por ous disc 13 fits Within the recessed portion 11 of the lower part of the pipe bowl. This disc is preferably of wood fiber, but it may be of any suitable porous materiala-nd it may be or" any suitable thickness found nec-' essary to thoroughly absorb all juices and noxious vapors from the smoke passing through it. The essential feature of the method of support of the foraminatod entrainment plate and the porous disc is that they shall be disposed in the bowl with an air space between them which prevents the oils and resins clinging to the particles of tobacco on the entrainment plate from being absorbed by the porous disc. Further the effect of the filtration by the porous disc in case the foraminated plate actually abutted on it, would be to have the areas of small spots on the disc where the holes of the plate admitted the smoke, the only parts of the disc which would be effective. By retaining the foraminated plate in spaced relation to the disc the smoke passing through the holes in the plate expands and not only is subject to the filtering and absorbing action of the entire area of the disc, but it is subjected to this action at its period of least velocity with a corresponding increased effectiveness. Also the moisture and oils accumulating from heating the unburned tobacco, will not fill the pores of the filtering plug or disc. Many other shapes of supporting plate may be used in place of the preferred shape illustrated and other methods of supporting the plate will readily occur to those skilled in the art. lVhat I have illustrated is a foraminated plate which may be easily and inexpensively stamped out of any kind of metal or other suitable material, and which by the method of supporting it in the bowl will be easily accessible for cleaning. The porous disc is preferably of wood fibre but it may be of paper or cloth if. desired.

5 A particular object in having the round downwardly extending flange from the foraminated plateof a size, to fit within the aperture of the upper bowl, is that in removing the upper bowl for changing the fibre disc, the plate will remain in the upper bowl and not be likely to fall'ofl? on the floor and so soil the fingers in replacing it.

The operation of the pipe issimple and always provides a cool clean smoke without H any opportunity for a pipe getting strong and offensive. After several smokes the ashes of the tobacco are removed by tapping in the usual manner, the bowl is unscrewed or twisted apart, and a tapping of the lower part of the pipe will cause the fibre disc to fall out. Then a new one is replaced, the top reinserted and the pipe is again ready for use. 1 p

Having thus described my invention and the preferred structure for employing it,

what I claim is g V In a smokers pipe in combination, a pipe body, a detachable bowl, said detachable e bowl secured to the body of said pipe, said bowl having a .threadediportion of lesser circumference than said bowl, and said body having'a shoulder spaced from the end of said threaded portion, a filtering disc, a foraminatedplate having an annularfiange for spacing tobacco from said disc, and the flange of said plate and the outerperiphery of said disc retained between said body shoulder and the end of said threaded por tion. 4o BERNARD M. MARKSTEIN, 

